My b2evolution Version: Not Entered

Hello!

I want to customize the login page my users see so it a) fits my site's color scheme and b) shows my site's logo so users don't think they've jumped to a completely different site.

Can anyone point me to where I can do this? The infinitely helpful b2evolution manual has this juicy tidbit:

You can edit the login page by editing the /admin/???????.php file on your server.

....Which offers absolutely no help whatsoever.

Thank you!